There are
1,820 mi
from Denison, TX to Ukiah, CA
That's the driving distance. It would take 1 day 8 hours to go from Denison, Texas to Ukiah, California.
The flight distance (direct flight from Denison, TX to Ukiah, CA) is 1,522.35 mi.
1,820 mi = 2,928.47 kms